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Which is best, long ring final with 2 spurs or short ring final with more spurs?

Former Community Member
Former Community Member
Good afternoon, hope you are all well. I have been re-evaluating the number and position of sockets in my bungalow, and considering having a few more added for convenience. Currently I seem to have a relatively short ring with 2 long spurs. If I measure the new route for cables incorporating the existing spurs and new sockets, I anticipate a total cable run of about 100m. From what I gather on this forum this is the limit for a ring final per 100m square of floor. Question is, is this a good idea, or should the ring final be made to run a shorter route and add more spurs, not exceeding the number of sockets on the ring, in order to keep volt drop to within acceptable limits. Not being an electrician I have used online cable size calculators to see if my idea is anywhere close to being ok and they come back with a huge 25mm squared cable. I am clearly out of my depth here hence the question. As always, many thanks in advance. Kind regards, Simon   
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    The 100m. length limit is roughly the maximum to be within the electrical limits.

    It has nothing to do with the 100sq.m. area which, in my opinion, is an irrelevance.

    10x10 is a perimeter of 40m. and  33x3 is 72m.


    Some bungalows have the ring in the loft with all the sockets as spurs.


    It's up to you to design it so that it is within all the electrical limits.
Reply
  • 0
    The 100m. length limit is roughly the maximum to be within the electrical limits.

    It has nothing to do with the 100sq.m. area which, in my opinion, is an irrelevance.

    10x10 is a perimeter of 40m. and  33x3 is 72m.


    Some bungalows have the ring in the loft with all the sockets as spurs.


    It's up to you to design it so that it is within all the electrical limits.
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